Premier League sides Manchester United and Arsenal are reportedly eager to acquire the 27-year-old while Atletico Madrid are also in the race to sign Higuain, who has a 100million euros buy-out clause, around £71m.

"Higuain's future? If a player has a contract this contract has to be respected," Napoli president Aurelio De Laurentiis said to Gazzetta dello Sport. "If a madman arrives and offers to pay his buy-out clause then one must consider it.

Higuain joined Napoli from Real Madrid in the summer of 2013 in a 40million euros transfer and is under contract with the Naples outfit for another three seasons.

The South American scored 18 goals and set up seven more in 37 Serie A appearances for Napoli in the 2014/15 campaign but could not help the club finish in the top three in Serie A to qualify for next season's Champions League.